Amazon.com: JA-RU Kidz Science Mega Magnet Toy (1 Magnet Assorted Color) Strong Horseshoe Shaped Large Magnet Toys for Kids and Adults, Boys and Girls. Science Experiments & Classroom Learning Toy. 5460-1 :
AlNiCo 2 inch Horseshoe Magnet with Keeper
Master Magnet 2 lb. Alnico Horseshoe Magnet Pull, Red 97924 - The Home Depot